Like many cities around the world, the bridges of Pittsburgh are filling up with all kinds of locks. This phenomenon is called "Love Lock" and it is supposed to be a symbol of a couple's enduring love. While I can see the attraction of doing something like this I think it has gone a little bit over the top. it seems that other famous love lock cities are in agreement.
Last year when we were in Pittsburgh I don't remember any of these locks along the bridges but this year they were all over the place. Here's a shot of a small section of locks along the Roberto Clemente Bridge:

Our Love Is Secure

Soapbox Warning!

Here's where I get on my little soapbox......

I know this may a bit of the "get off my lawn" type stuff that we all heard as kids but here goes:

While the locks attached to the bridge made for an interesting photographic subject I would have no problem if the City of Pittsburgh, and other cities, were to remove all of them. In my mind, placing a lock on a public space/structure like a bridge is the same as littering or graffiti. Show your love for someone with the things that really count, like your loyalty, actions and words, not by defacing public property.